<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    
    <form action="http://localhost:3000/index" method="post">
        <input name="username" placeholder="请输入用户名" ><br>
        <input name="password" placeholder="请输入密码" ><br>
        <input type="submit"/>
    </form>

</body>
</html>